A lunar instrument emits two electromagnetic pulses at the same time. The pulses travel the same distance through a vacuum to a detector on an orbiting spacecraft.
| Pulse | Wavelength in m |
|---|---|
| P | 3.0 × 10-2 |
| Q | 6.0 × 10-7 |
Compare the frequency and arrival time of pulse P with pulse Q. Explain your answer.
93 exam-style questions on AQA GCSE Physics 6.2 Electromagnetic waves, covering 6.2.1 Types of electromagnetic waves, 6.2.2 Properties of electromagnetic waves 1, 6.2.3 Properties of electromagnetic waves 2, 6.2.4 Uses and applications of electromagnetic waves, 6.2.5 Lenses, and 6.2.6 Visible light. Each one has a worked solution and a mark scheme showing where the marks go.